"plunder, gain, profit," mid-15c., from Old French butin "booty" (14c.), from a Germanic source akin to Middle Low German bute "exchange." Influenced in form and sense by boot (n.2) and in form by nouns ending in -y. Meaning "female body considered as a sex object" is 1920s, black slang.

booty

The female body as a sex object You can listen to it, but you can shake your booty to it too

The vulva

The sex act; sex; ass: The heroines are giving up some booty(1920s+ Black)

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.Copyright (C) 2007 by HarperCollins Publishers.Cite This Source

booty in the Bible

captives or cattle or objects of value taken in war. In Canaan all that breathed were to be destroyed (Deut. 20: 16). The "pictures and images" of the Canaanites were to be destroyed also (Num. 33:52). The law of booty as to its division is laid down in Num. 31:26-47. David afterwards introduced a regulation that the baggage-guard should share the booty equally with the soldiers engaged in battle. He also devoted of the spoils of war for the temple (1 Sam. 30:24-26; 2 Sam. 8:11; 1 Chr. 26:27).